@COM8: Well I have been keeping an eye on it.. it is like the old Zigbee alliance Albeit with the Cloud Providers than Device OEMs... Nonetheless these Cloud Vendors (Amazon, Google etc.) are also known for dropping a technology in comparision to a Hardware Vendor... So let them roll out a bit more.... it is promising but just promising....
Alacer
debacle: I believe XMPP from Pub-Sub Perspective yes but overal is not the right fit in this comparision... Also all the other MQs are there for a specific use case... So what the comparision is alll about...